Reinforced nozzle for sheet-metal containers.



G. BLOCH.

REINFORCED NOZZLE FOR SHEET METAL CONTAINERS;

APPLICATION FILED OCT. 14. l9l5- Patented May 15, 1917.

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UNITED STATES PATENT OFFICE.

GOTTHOLD BLOCH, OF BROOKLYN, NEW YORK, ASSIGNOR TO NATIONAL ENAMELING &, STAMPING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

' REINFORCED NOZZLE FOR SHEET-METAL CONTAINERS.

Specification of Letters Patent.

liatented lliay 15, 191*".

Application filed October 14, 1915. Serial No. 55,788.

To all whom it may concern:

Be it known that I, GOTTHOLD BLOGI-I, a citizen of the United States, residing at Brooklyn, in the State of New York, have invented certain new and useful Improvements in Reinforced Nozzles for Sheet- Metal Containers, of which the following is a specification.

This invention relates to a nozzle or neck applied to a reinforced opening in sheetmetal containers.

Numerous kinds of containers such as barrels, or casks, are manufactured of sheet steel, and have a nozzle or neck provided with a screw-thread for engagement of a plug, spigot or other closure device. In many cases the metal-shell of the container is too thin to permit of cutting a screwthread with which a spigot may engage.

The desideratum which this invention supplies is a reinforced nozzle or neck partly formed of the thin sheetunetalof a barrel or cask, and projecting therefrom, and screw-threads cut on said nozzle to receive a spigot or other closure device.

- My invention, therefore, has for its object to provide on thin sheet-metal containers an improved formation of nozzle or neck.

The invention is illustrated in the accompanying drawing wherein,

Figure 1, shows a sheet-metal article, such as the head of a barrel, can or cask, provided with my improved reinforced hole connection. I

Fig. 2, illustrates in cross-sectional detail the reinforcing plate employed in carrying out my invention.

Fig. 3, shows the same in plan view.

Fig. 4, is a cross-sectional detail through the hole in the barrel-head and illustrates one step that may be taken in the preparation of the sheet-metal preparatory to receiving the reinforcing plate.

Fig. 5, shows another step in which the reinforcing plate and the prepared sheetmetal head are secured together.

Fig. 6, shows a cross-sectional view through the barrel-head andits hole and illustrates another step in producing the improved reinforced hole and neck.

Fig. 7, shows a cross-sectional detail through the neck and joint hole, partly formed by the sheet-metal of the container, and where a screw-thread is formed on the neck.

In commercially practising the invention in making barrels of sheet-steel, I prefer to form a circular or other shaped shallow recess 8, 011 the inner surface of the sheetmetal head 9, at the place where the hole is to be formed, and at the center of this recess a circular perforation or opening 10, is to be formed at some stage of the method. The formation of the recess 8, at the inner surface of the thin sheet-metal produces a correspondingly shaped projection 11, on the exterior surface of the metal. This recessing step, however, is not essential, but for some of the products of this method it is preferred.

On the inner surface of the sheet-metal barrel-head 9, I secure a reinforcing plate 12, in direct contact with said surface. The reinforcing plate,12, and the sheet-metal head 9, are secured together, preferably by so-called electric spot-welds which are indi- 'cated at 14, so as to permanently secure the two plates together.

The reinforcing plate 12, must have an opening 13, whose position will register or coincide with the perforation or opening 10, in the barrel-head 9. Initially the opening 13, in the reinforce will be smaller in diameter than the said opening 10, in the barrel head, as seen in Fig. 5, of the drawing.

It will be seen the reinforcing plate 12, in the present instance, has a greater thickness than the metal of the barrel-head 9, which affords the advantage of enabling screw-threads, if the same are desired, to be cut in the metal of the reinforcing plate alone.

In the present instance the reinforcing plate 12, is bendable and has the form of a disk or circular washer, of a diameter to enable it to enter and fit within the recess 8, when the later is employed.

The hole or opening 18, in the reinforce plate or disk is to be formed at some convenient stage of the construction.

The appearance of the article (in this instance a barrel-head) when it has been subj ected to the next step of the construction, is illustrated in Fig. 6. This step consists in the employment of a suitable die and punch to expand the metal around the two openings 10 and 13, in the barrel head 9, and bendable plate 12, respectively, and this ex panded metal being forced outwardly forms a double-thick straight nozzle 15, that pro jects on the outer side of the barrel-head; the internal nozzle and the flat flange of the bendable plate are-connected integrally by metal which curves from said'fl ange intothe nozzle, as shown in Fig. 6.

That part ofthe described procedure of construction that includes the spot-welds 14,

to hold the two thicknesses of metal together, and then the action ofidrawingiand expanding dies to simultaneously draw the saidtwo; thicknesses of sheet-metal, results in so closely uniting, thecontactingsurfaces of the two sheet-metal plates, as toinsure a liquid-tight joint "o-r'un-ion at saidsurfaees.

, It willbe seen the nozzle or neck '15, is

formed of twothicknesses of; sheet-metal and the, inner thickness, in the-present instance, is thicker than the outer thickness.

Thefinal step in this construction is to cut a screw-thread 16, within the nozzle or neck 15 j this is donev by employingwell known V Copies of this patent may be obtained for thread out either internally of the nozzle or externally.

' Having-- described my invention what: I claim is,-

The combination with a sheet metal containerhaving a circularopening in its wall and the metal of the wall about the opening being forced outwardly to form a nozzle thatcisismooth on both the interior and the exterior, and on the inner side said receptacle-wall beingpressed outwardly to form an annular interior recessaround the opening, and apl-ate having an interior portion which seats inrthe interior recess of the receptacle walland said platebeing. pressed outwardly from. said flange and through the n0zzle,+the outer surface ot the outwardly-pressed central portionof theplate beinginclosecontact iwith the smooth interior of i the nozzle portion of the receptacle wall and the inner surface of said out Hardly-pressed portion of the plate having screw threads and thefiange portion ofthe plate-being permanently secured in the in terior recess oi .the. receptacle wall.

Intestimony whereofl aflix my signature in, presence of .two witnesses.

GOTT HOLD BLOGH. Witnesses x RAYMO DJ. -MCGRATH,

HABRTF. JACOBSON.

five cents each, by address-5111.2 the "Commissioner of Patents. Washington, DIG? 

